Neb. Rev. Stat. §§ 70-510
No private person, firm, association or corporation proposing to purchase, lease, or otherwise acquire any electric light and power plants, distribution system or transmission lines, from any city, village, or public electric light and power district of this state, nor any one on behalf or for the benefit of such proposed purchaser, may, in order to promote or bring about such sale, lease or transfer, pay out, contribute or expend, directly or indirectly, money or other valuable thing in excess of three thousand dollars nor, in any event, in excess of a sum in number of dollars greater than the number of the qualified voters in such municipality or public electric light and power district, based on the total vote cast for Governor at the last general election.
Neb. Rev. Stat. §§ 70-510